Indication: COMBIGAN® (brimonidine tartrate/timolol
maleate ophthalmic solution) 0.2%/0.5% is approved for reducing elevated intraocular
pressure (IOP) in patients with glaucoma who require additional or adjunctive IOP
lowering therapy. COMBIGAN® lowers IOP slightly less than taking
both brimonidine tartrate three times a day and timolol maleate two times a day.
IMPORTANT SAFETY INFORMATION
Contraindications: COMBIGAN® ophthalmic solution
should not be used by patients who have, or ever had bronchial asthma, chronic bronchitis,
emphysema, slow heartbeat, impaired conduction of the heart, heart failure, or impaired
pumping of the heart. COMBIGAN® should not be used in patients under
the age of 2 years, or by patients with hypersensitivity to any ingredient of this
product.
Warnings and Precautions: Severe respiratory reactions including
death due to difficulty breathing have been reported in patients with asthma. Stimulation
of the nervous system may be essential in individuals with diminished heart pumping
ability. In patients without a history of cardiac failure, continued use of beta-blocking
agents over a period of time can, in some cases, lead to cardiac failure. Patients
with mild or moderate chronic bronchitis, emphysema, or asthma should not take COMBIGAN®
ophthalmic solution. COMBIGAN® may worsen symptoms associated with
poor circulation. COMBIGAN® patients who have allergies may experience
stronger allergy symptoms than they would without COMBIGAN® ophthalmic
solution. Patients may experience muscle weakness or fatigue. COMBIGAN®
may mask hypoglycemic symptoms in patients with diabetes mellitus. COMBIGAN®
may mask certain clinical signs of hyperthyroidism, such as rapid heartbeat. Patients
with overactive thyroid who withdraw too abruptly from COMBIGAN®
may experience severe hyperthyroid symptoms. Ocular hypersensitivity reactions have
been reported with brimonidine tartrate ophthalmic solutions 0.2%, with some reported
to be associated with an increase in intraocular pressure. There have been reports
of bacterial keratitis associated with the use of multiple-dose containers of topical
ophthalmic products. Beta-adrenergic receptor blockade impairs the ability of the
heart to respond to general anesthesia in surgical procedures and some patients
have experienced protracted severe hypotension during anesthesia. In patients undergoing
elective surgery, gradual withdrawal of beta-adrenergic receptor blocking agents
may be recommended.
Adverse reactions: The most common adverse reactions occurring
in approximately 5% to 15% of patients included allergic inflammation of the eye,
abnormally large lymph follicles in the mucous membrane lining the inner surface
of the eyelid and the exposed surface of the eyeball (also called the conjunctiva),
eye redness, severe itching of the eyes, and burning and stinging of the eyes.
Drug interactions: Blood pressure drugs and drugs that are used
to stimulate the heart in cases of heart failure (also called cardiac glycosides)
may lower blood pressure. Using COMBIGAN® ophthalmic solution together
with beta-blocker drugs may interrupt beta-receptor activity (beta-blockade) within
the body. Oral or intravenous calcium channel blockers that prevent calcium from
entering the cells of the heart and blood vessels (calcium antagonists) may cause
disturbances in the passage of blood through the heart, and/or abnormally low blood
pressure. Drugs that significantly decrease fluids of the adrenal gland may produce
low blood pressure and/or a noticeably slow heartbeat rate below 60 beats per minute.
Using COMBIGAN® with central nervous system depressants may result
in an increased effect. Using COMBIGAN® with digitalis, a cardiac
stimulant, may have added effects in prolonging the time it takes for blood to pass
through the heart. CYP2D6 inhibitors may enhance the effect of beta-blockade within
the body. Tricyclic antidepressants may reduce the ability of clonidine to lower
blood pressure. Monoamine oxidase inhibitors (a type of antidepressant drug) may
result in low blood pressure.
FULL PRODUCT INFORMATION